Title :
Dark current in high-gradient accelerator
Author_Institution :
Lab. de l´´Accel. Lineaire, Univ. Paris Sud, Orsay, France
fDate :
12/1/1989 12:00:00 AM
Abstract :
A report is presented on the first measurements from a program to study high-gradient linear e+/e- accelerators, as part of a research and development program on linear colliders. The experimental setup is a realistic S-band, traveling-wave, disk-loaded warm accelerating structure, fed by long RF pulses. The dark current produced by field emission has been investigated. The peak current is about 0.2 mA/m and the steady current 40 μA/m, for an accelerating field of 30 MV/m. The global field enhancement is β=140. The level of dose rate is under 4 rad/h
Keywords :
electron accelerators; linear accelerators; S-band; accelerating field; dark current; disk-loaded warm accelerating structure; dose rate level; field emission; global field enhancement; high-gradient accelerator; high-gradient linear e+/e- accelerators; linear colliders; long RF pulses; measurements; peak current; realistic structure; steady current; traveling-wave; Acceleration; Copper; Current measurement; Dark current; Dielectric breakdown; Electron beams; Electron emission; Linear accelerators; Shape; Water heating;
Journal_Title :
Electrical Insulation, IEEE Transactions on
